Many pharmaceutical companies and biotech firms have adopted policies stating that they will not conduct or financially support invasive research on chimpanzees, while others have severely restricted their use of chimpanzees.

Membership

The Humane Society of the United States (HSUS) is registered as a 501(c)(3) non-profit organization. Contributions to The Humane Society of the United States are tax-deductible to the extent permitted by law. The HSUS's tax identification number is 53-0225390.